CN104858627A - Machining process of precision forging three-pin shaft - Google Patents
Machining process of precision forging three-pin shaft Download PDFInfo
- Publication number
- CN104858627A CN104858627A CN201510343633.7A CN201510343633A CN104858627A CN 104858627 A CN104858627 A CN 104858627A CN 201510343633 A CN201510343633 A CN 201510343633A CN 104858627 A CN104858627 A CN 104858627A
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- forging
- keeps
- roughness
- aligning
- finishing
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/202—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints
- F16D3/205—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
- F16D3/2055—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part having three pins, i.e. true tripod joints
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention relates to a machining process of a precision forging three-pin shaft. The machining process comprises the steps of straightening, centreless turning, straightening and calendering, centreless grinding, sawing, insufficient annealing, shot blasting, chamfering, phosphorus saponifying, external cooperation inspection, finishing forming, burr punching, reference plane turning and boring, total length de-turning, appearance separation, and packaging. The three-pin shaft produced by use of the machining process is attractive in color and luster, excellent in quality, and capable of well meeting the requirements of the existing market; in addition, the strength and the hardness of the three-pin shaft manufactured by use of the process both can be effectively guaranteed, and damage and frequent replacement can be avoided in the use process.
Description
Technical field
The present invention relates to a kind of processing technology of net-size forging three bearing pin, belong to net-size forging processing technique field.
Background technology
Three bearing pins are one of the strength members in car drivetrain system, and its mechanical performance and contour structures require very strict, and manufacture difficulty is very large.Due to the performance of three its uniquenesses of bearing pin, be more and more subject to now the favor in market.How to adopt efficient, economic method to produce three bearing pin parts of high-quality, become urgent problem in production.The grinding process of three traditional pin roll end faces adopts forward filing, and it belongs to intermittent grinding and easily causes vibration because grinding force suddenlys change, and proposes oblique filing, improve surface quality and machining accuracy for this phenomenon.
Three bearing pins are as the part on a basis, assembling for automobile has great impact, past, this part mainly adopted machining, because the intensity of material, hardness all can not be guaranteed, in actual use often there is part injury and need the phenomenon of constantly replacing in meeting, and this product generally adopts cold forming method at present, but technological design mainly still by rule of thumb, all also there is irrational phenomenon in distribution, the mould structure design of processing passage, needs further investigation.
Summary of the invention
The object of the invention is to: for the defect of prior art, propose a kind of processing technology of net-size forging three bearing pin, not only color and luster is attractive in appearance for three bearing pins that this processing technology goes out, and it is superior in quality, can be good at the needs meeting existing market, and go out the intensity of three bearing pins by this processes and hardness can both be effectively guaranteed, in use can not there is the situation damaged and constantly change.
The technical solution adopted in the present invention is: a kind of processing technology of net-size forging three bearing pin, comprises the steps:
(1), align: the aligning calendering equipment that the blank model be bent in transportation at raw material is YJ60 is aligned, the flexibility≤0.6mm/m of the blank after aligning;
(2, be not in the mood for car: round stock outer surface cuts by the Centreless lathe utilizing model to be WXC 60B, and diameter remains on Φ 28.75+0.1, removes the defects such as raw material face crack simultaneously, keeps roughness≤Ra6.3;
(3), aligning press polish: be the aligning that YJ60 aligns calendering equipment and carries out again to the forging position model be bent after Centreless lathe, the diameter after aligning remains on Φ 28.7+0.1, the flexibility≤0.6mm/m of forging parts;
(4), centreless grinding: with the centerless grinder of unit type M1083A outward appearance had obvious impression, the defect such as to damage polishes, and keeps roughness≤Ra3.2;
(5), saw material: by circular saw, round stock is sawn into the identical forging of size, and keeps each forge weight to be between 338g-342 g, wherein adjacent in forging angular error≤1 °, end;
(6), partial annealing: the annealing carbide spheroidization in forging carried out with 120KW vacuum well type resistance furnace, obtain the tissue of equally distributed spherical or granular carbide on ferrite matrix, and keep hardness≤80HRB, coating keeps decarburized layer deepness≤0.2mm, non-coating keeps decarburized layer deepness≤0.4mm, open cooling blower chilling temperature 620 DEG C ± 10 DEG C, tapping temperature≤500 DEG C, evacuated pressure is at-0.06 ~-0.10MPa simultaneously;
(7), ball blast: spheroidizing forging shot-blasting machine is carried out without rusty stain and non-scale process 5 ~ 10 minutes to its surface;
(8), chamfering: chamfered is carried out for the forging beveler after ball blast;
(9), phospholeum: in phospholeum automatic production line, Phosphating Solution content total acidity is kept to be 1.5≤Fe2+≤4, saponification agent concentration is 1.5 ~ 3.5 units, Phosphating Slot temperature is 70 ~ 85 °, soap tank temperature is 70 ~ 85 °, and scalding groove temperature is 65 ~ 85 °, makes forging surface uniform cover one deck phosphate coating, in taupe, hand touches with lubrication sense;
(10), external coordination is checked and accepted: carry out an acceptance inspection to the forging after phospholeum by external coordination acceptance criteria;
(11), finishing is shaped: be that JA89-400 finishing machine carries out finishing to forging by unit type, keeping three Xiao to push up diameter is S Φ 68+2.0, outer bulb diameter is S Φ 38.4 ± 1.4, interior raceway groove die joint burr≤0.3, cylinder pressure remains between 6 ~ 7MPa, makes three Xiao's boom ends without obvious ring-type convex epirelief;
(12), die-cut burr: end face is polished by the forging belt sander after finishing, makes end face impulse-free robustness;
(13), boring: the forging after die-cut burr is holed, keeps aperture to be Φ 19+0.5, and make roughness≤Ra12.5;
(14), car datum level, bore hole: make forging aperture remain on Φ 20.3+0.5 by this step, segment length remains on 23.8 ± 0.1 mm, roughness≤Ra6.3;
(15), car overall length: the overall length 27.3+0.4 mm keeping forging, roughness≤Ra6.3;
(16), outward appearance sorting: by artificial forging is shaping after carry out sorting, make the forging after sorting without rusty stain, surface is without the defect such as crushing and collide with;
(17), packaging: put in packing case according to the requirement specified and quantity by finished product forging and encapsulate, ensure that packing case is clean and knows complete with product identification, the front spraying of the packing of product simultaneously oil machine, guarantees non-corrosive in two months.
After adopting technique scheme, beneficial effect of the present invention is: not only color and luster is attractive in appearance for three bearing pins produced by this processing technology, and it is superior in quality, can be good at the needs meeting existing market, and go out the intensity of three bearing pins by this processes and hardness can both be effectively guaranteed, in use can not there is the situation damaged and constantly change.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1
A processing technology for net-size forging three bearing pin, comprises the steps:
(1), align: the aligning calendering equipment that the blank model be bent in transportation at raw material is YJ60 is aligned, the flexibility≤0.6mm/m of the blank after aligning;
(2, be not in the mood for car: round stock outer surface cuts by the Centreless lathe utilizing model to be WXC 60B, and diameter remains on Φ 28.75+0.1, removes the defects such as raw material face crack simultaneously, keeps roughness≤Ra6.3;
(3), aligning press polish: be the aligning that YJ60 aligns calendering equipment and carries out again to the forging position model be bent after Centreless lathe, the diameter after aligning remains on Φ 28.7+0.1, the flexibility≤0.6mm/m of forging parts;
(4), centreless grinding: with the centerless grinder of unit type M1083A outward appearance had obvious impression, the defect such as to damage polishes, and keeps roughness≤Ra3.2;
(5), saw material: by circular saw, round stock is sawn into the identical forging of size, and keeps each forge weight to be between 338g-342 g, wherein adjacent in forging angular error≤1 °, end;
(6), partial annealing: the annealing carbide spheroidization in forging carried out with 120KW vacuum well type resistance furnace, obtain the tissue of equally distributed spherical or granular carbide on ferrite matrix, and keep hardness≤80HRB, coating keeps decarburized layer deepness≤0.2mm, non-coating keeps decarburized layer deepness≤0.4mm, open cooling blower chilling temperature 620 DEG C ± 10 DEG C, tapping temperature≤500 DEG C, evacuated pressure is at-0.06 ~-0.10MPa simultaneously;
(7), ball blast: spheroidizing forging shot-blasting machine is carried out without rusty stain and non-scale process 5 ~ 10 minutes to its surface;
(8), chamfering: chamfered is carried out for the forging beveler after ball blast;
(9), phospholeum: in phospholeum automatic production line, Phosphating Solution content total acidity is kept to be 1.5≤Fe2+≤4, saponification agent concentration is 1.5 ~ 3.5 units, Phosphating Slot temperature is 70 ~ 85 °, soap tank temperature is 70 ~ 85 °, and scalding groove temperature is 65 ~ 85 °, makes forging surface uniform cover one deck phosphate coating, in taupe, hand touches with lubrication sense;
(10), external coordination is checked and accepted: carry out an acceptance inspection to the forging after phospholeum by external coordination acceptance criteria;
(11), finishing is shaped: be that JA89-400 finishing machine carries out finishing to forging by unit type, keeping three Xiao to push up diameter is S Φ 68+2.0, outer bulb diameter is S Φ 38.4 ± 1.4, interior raceway groove die joint burr≤0.3, cylinder pressure remains between 6 ~ 7MPa, makes three Xiao's boom ends without obvious ring-type convex epirelief;
(12), die-cut burr: end face is polished by the forging belt sander after finishing, makes end face impulse-free robustness;
(13), boring: the forging after die-cut burr is holed, keeps aperture to be Φ 19+0.5, and make roughness≤Ra12.5;
(14), car datum level, bore hole: make forging aperture remain on Φ 20.3+0.5 by this step, segment length remains on 23.8 ± 0.1 mm, roughness≤Ra6.3;
(15), car overall length: the overall length 27.3+0.4 mm keeping forging, roughness≤Ra6.3;
(16), outward appearance sorting: by artificial forging is shaping after carry out sorting, make the forging after sorting without rusty stain, surface is without the defect such as crushing and collide with;
(17), packaging: put in packing case according to the requirement specified and quantity by finished product forging and encapsulate, ensure that packing case is clean and knows complete with product identification, the front spraying of the packing of product simultaneously oil machine, guarantees non-corrosive in two months.
Above the specific embodiment of the present invention is described, but the present invention is not limited to above description.For a person skilled in the art, any equal amendment to the technical program and substitute be all within the scope of the invention.Therefore, equalization conversion done without departing from the spirit and scope of the invention and amendment, all should be encompassed in scope of the present invention.
Claims (1)
1. a processing technology for net-size forging three bearing pin, is characterized in that: comprise the steps:
(1), align: the aligning calendering equipment that the blank model be bent in transportation at raw material is YJ60 is aligned, the flexibility≤0.6mm/m of the blank after aligning;
(2, be not in the mood for car: round stock outer surface cuts by the Centreless lathe utilizing model to be WXC 60B, and diameter remains on Φ 28.75+0.1, removes the defects such as raw material face crack simultaneously, keeps roughness≤Ra6.3;
(3), aligning press polish: be the aligning that YJ60 aligns calendering equipment and carries out again to the forging position model be bent after Centreless lathe, the diameter after aligning remains on Φ 28.7+0.1, the flexibility≤0.6mm/m of forging parts;
(4), centreless grinding: with the centerless grinder of unit type M1083A outward appearance had obvious impression, the defect such as to damage polishes, and keeps roughness≤Ra3.2;
(5), saw material: by circular saw, round stock is sawn into the identical forging of size, and keeps each forge weight to be between 338g-342 g, wherein adjacent in forging angular error≤1 °, end;
(6), partial annealing: the annealing carbide spheroidization in forging carried out with 120KW vacuum well type resistance furnace, obtain the tissue of equally distributed spherical or granular carbide on ferrite matrix, and keep hardness≤80HRB, coating keeps decarburized layer deepness≤0.2mm, non-coating keeps decarburized layer deepness≤0.4mm, open cooling blower chilling temperature 620 DEG C ± 10 DEG C, tapping temperature≤500 DEG C, evacuated pressure is at-0.06 ~-0.10MPa simultaneously;
(7), ball blast: spheroidizing forging shot-blasting machine is carried out without rusty stain and non-scale process 5 ~ 10 minutes to its surface;
(8), chamfering: chamfered is carried out for the forging beveler after ball blast;
(9), phospholeum: in phospholeum automatic production line, Phosphating Solution content total acidity is kept to be 1.5≤Fe2+≤4, saponification agent concentration is 1.5 ~ 3.5 units, Phosphating Slot temperature is 70 ~ 85 °, soap tank temperature is 70 ~ 85 °, and scalding groove temperature is 65 ~ 85 °, makes forging surface uniform cover one deck phosphate coating, in taupe, hand touches with lubrication sense;
(10), external coordination is checked and accepted: carry out an acceptance inspection to the forging after phospholeum by external coordination acceptance criteria;
(11), finishing is shaped: be that JA89-400 finishing machine carries out finishing to forging by unit type, keeping three Xiao to push up diameter is S Φ 68+2.0, outer bulb diameter is S Φ 38.4 ± 1.4, interior raceway groove die joint burr≤0.3, cylinder pressure remains between 6 ~ 7MPa, makes three Xiao's boom ends without obvious ring-type convex epirelief;
(12), die-cut burr: end face is polished by the forging belt sander after finishing, makes end face impulse-free robustness;
(13), boring: the forging after die-cut burr is holed, keeps aperture to be Φ 19+0.5, and make roughness≤Ra12.5;
(14), car datum level, bore hole: make forging aperture remain on Φ 20.3+0.5 by this step, segment length remains on 23.8 ± 0.1 mm, roughness≤Ra6.3;
(15), car overall length: the overall length 27.3+0.4 mm keeping forging, roughness≤Ra6.3;
(16), outward appearance sorting: by artificial forging is shaping after carry out sorting, make the forging after sorting without rusty stain, surface is without the defect such as crushing and collide with;
(17), packaging: put in packing case according to the requirement specified and quantity by finished product forging and encapsulate, ensure that packing case is clean and knows complete with product identification, the front spraying of the packing of product simultaneously oil machine, guarantees non-corrosive in two months.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510343633.7A CN104858627A (en) | 2015-06-19 | 2015-06-19 | Machining process of precision forging three-pin shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510343633.7A CN104858627A (en) | 2015-06-19 | 2015-06-19 | Machining process of precision forging three-pin shaft |
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| Publication Number | Publication Date |
|---|---|
| CN104858627A true CN104858627A (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510343633.7A Pending CN104858627A (en) | 2015-06-19 | 2015-06-19 | Machining process of precision forging three-pin shaft |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5878491A (en) * | 1996-03-29 | 1999-03-09 | Ascoforge Safe | Process for the manufacture of a forged connecting rod |
| CN101829889A (en) * | 2010-04-30 | 2010-09-15 | 钟长林 | Production process of austenitic stainless steel bar by short-process continuous casting and rolling |
| CN102019542A (en) * | 2010-11-08 | 2011-04-20 | 大丰市中德精锻件有限公司 | Processing process of profiled blind hole flange type inner ball cage fine forging piece |
| CN102896167A (en) * | 2012-08-30 | 2013-01-30 | 镇江中虎弹簧有限公司 | Worm bevel gear cold forging manufacturing process |
| CN103103459A (en) * | 2013-02-18 | 2013-05-15 | 无锡市派克重型铸锻有限公司 | Large-scale forging and manufacture process wind electricity slewing bearing forging and manufacturing process |
| CN203412977U (en) * | 2013-08-28 | 2014-01-29 | 长春博宇汽车部件有限公司 | Sedan universal joint-three-pin shaft fork |
| CN104148884A (en) * | 2014-05-28 | 2014-11-19 | 无锡兴澄华新钢材有限公司 | Irregular bar machining process |
-
2015
- 2015-06-19 CN CN201510343633.7A patent/CN104858627A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5878491A (en) * | 1996-03-29 | 1999-03-09 | Ascoforge Safe | Process for the manufacture of a forged connecting rod |
| CN101829889A (en) * | 2010-04-30 | 2010-09-15 | 钟长林 | Production process of austenitic stainless steel bar by short-process continuous casting and rolling |
| CN102019542A (en) * | 2010-11-08 | 2011-04-20 | 大丰市中德精锻件有限公司 | Processing process of profiled blind hole flange type inner ball cage fine forging piece |
| CN102896167A (en) * | 2012-08-30 | 2013-01-30 | 镇江中虎弹簧有限公司 | Worm bevel gear cold forging manufacturing process |
| CN103103459A (en) * | 2013-02-18 | 2013-05-15 | 无锡市派克重型铸锻有限公司 | Large-scale forging and manufacture process wind electricity slewing bearing forging and manufacturing process |
| CN203412977U (en) * | 2013-08-28 | 2014-01-29 | 长春博宇汽车部件有限公司 | Sedan universal joint-three-pin shaft fork |
| CN104148884A (en) * | 2014-05-28 | 2014-11-19 | 无锡兴澄华新钢材有限公司 | Irregular bar machining process |
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Application publication date: 20150826 |
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